A CD ladder splits your cash across several certificates of deposit with staggered maturity dates instead of locking it all into one CD term. A simple version spreads money evenly across 1-year, 2-year, 3-year, 4-year, and 5-year CDs, so one-fifth of your cash becomes available every year. Each time a CD matures, you reinvest it into a new 5-year CD, keeping the ladder running indefinitely. The result is a structure that captures more of the higher rate longer CDs typically pay, while still giving you regular access to part of your money without ever breaking a CD early.
How it works
- You divide your total cash into equal parts, one for each rung of the ladder.
- Each part goes into a CD with a different term, from short to long, maturing in a staggered sequence.
- When the shortest CD matures, you have a choice. Spend it if you need it, or reinvest it into a new long-term CD to extend the ladder.
- Reinvesting keeps the ladder self-sustaining. Over time, every rung eventually becomes a long-term CD that was funded by an earlier maturity, not new outside cash.
- You always have a CD maturing on a predictable schedule, which is the entire point: liquidity without giving up the better rate on longer terms.
Building a 5-rung ladder step by step
On a hypothetical $25,000 to ladder:
- Split the total into five equal parts. $5,000 into each rung in this example.
- Open a 1-year CD, a 2-year CD, a 3-year CD, a 4-year CD, and a 5-year CD with $5,000 each, ideally shopping rates across a few banks or credit unions.
- When the 1-year CD matures, reinvest it into a new 5-year CD. You now hold rungs maturing in 1 (the old 2-year), 2 (old 3-year), 3 (old 4-year), 4 (old 5-year), and 5 years (the new one).
- Repeat every year. Each maturing CD becomes a fresh 5-year CD, so after year five, every rung in the ladder is earning the long-term rate.
- Keep one rung's cash liquid if rates are moving fast. In a falling-rate environment, some savers pause reinvesting the shortest rung and hold cash briefly instead, waiting to see where rates settle.
Comparison: ladder vs single CD
| Approach |
Liquidity |
Rate captured |
Flexibility |
| Single 5-year CD |
Locked for 5 years |
Full long-term rate on everything |
Low, early withdrawal penalty on all of it |
| Single 1-year CD |
Liquid every year |
Lower short-term rate on everything |
High, but rate risk on renewal |
| 5-rung ladder |
Part liquid every year |
Blended rate, weighted toward longer terms over time |
High, only one rung is ever locked long |
Common mistakes
- Spacing rungs too close together. A ladder of 3-month, 6-month, and 9-month CDs barely captures any long-term rate advantage; real laddering needs meaningful gaps between terms.
- Breaking a CD early instead of waiting for the next rung. Early withdrawal penalties usually erase months of earned interest, undoing the point of the ladder.
- Ignoring rates across banks. CD rates vary meaningfully between institutions, and a ladder built entirely at one bank can miss better terms elsewhere.
- Forgetting to actually reinvest maturing rungs. A ladder only stays a ladder if matured CDs get renewed on schedule instead of drifting into a low-rate checking account.
FAQ
How many rungs should a CD ladder have?
Four to five rungs is a common structure, but two or three works fine for a smaller amount or a shorter overall horizon.
What happens if I need the money before a CD matures?
You can usually withdraw early for a penalty, typically a few months of interest. That is why the ladder is designed to always have a rung close to maturing.
Is a CD ladder better than one long CD?
It depends on your need for access. A single long CD can pay more if rates are falling, but a ladder gives you regular liquidity and reduces the risk of locking all your cash in at the wrong moment.
Can I build a CD ladder inside a retirement account?
Yes, many brokerages and banks allow CDs inside an IRA, which can be useful for the conservative portion of a retirement portfolio.
Where to go next
Compare the approach directly with CD ladder vs high-yield savings, and see how bonds fit alongside CDs in the bond investing guide for 2026.